A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

again today, my car after driving for about 20 min starts to accel and decel at will no matter where

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Old Sep 16, 2007 | 05:41 PM
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Default again today, my car after driving for about 20 min starts to accel and decel at will no matter where

in the revs , even at idle it dropped quickly, thinking it was gonna stall....it still seems to have power.... when it did this, I shut the motor down, turned back on, and fine..... check all my vacuum lines, etc.......next day it was fine....today, again, after driving a bit, it started up again..... electrical? why would happen on and off?
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Old Sep 16, 2007 | 05:42 PM
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btw - i have a 6 spd....no matter what gear I was in, it was acting up.
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Old Sep 16, 2007 | 06:18 PM
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Default Does it only do it when warmed up? It sounds like you don't have a CEL, but see

if you can pull any codes. You should at least have some misfire codes that might start us in the right direction.
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Old Sep 17, 2007 | 10:43 AM
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no CEL's at all - HELP! It does it have running a while
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